CN100501414C - Carrier data safety protection method and recording system device of pre-payment meter - Google Patents
Carrier data safety protection method and recording system device of pre-payment meter Download PDFInfo
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- CN100501414C CN100501414C CNB2004100258950A CN200410025895A CN100501414C CN 100501414 C CN100501414 C CN 100501414C CN B2004100258950 A CNB2004100258950 A CN B2004100258950A CN 200410025895 A CN200410025895 A CN 200410025895A CN 100501414 C CN100501414 C CN 100501414C
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
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Abstract
The invention is a data security protection and meter reading system device for an advance payment ammeter. When the user pays for electricity, the worker sends the electricity purchasing data to user ammeter through electric wire directly; the user ammeter carrier model receives the data, stores it into the electricity purchasing data memory circuit with determined format, and returns the affirmance information to the meter reading electricity sale computer through electric wire to be checked. The system is made up of meter reading electricity sale computer, meter reading collector, carrier of data memory circuit containing nonvolatile RAM device, user ammeter assembled together with the carrier model, a downstream channel and a upstream channel made up of low voltage electricity supplying circuit.
Description
Technical field
The invention belongs to electric energy metrical, control and toll administration technology; particularly be that information channel is carried out the centralized automatic meter-reading charge with the power line carrier; on each user's electric energy meter, realize pre paid functionality, reach the protected data information security, make it avoid the decentralised control management system of extraneous malicious attack.
Background technology
The metering of electric energy and charge are adopted at present mostly still at each user inlet of powering electric energy meter are installed, and full-time meter reading personnel regularly checks meter to the doorstep, then each user management method of paying the fees to the cash desk again.This method both wasted time and energy, the mistake that unavoidable again a variety of causes causes.Owing to there is not effective surveillance and control measure to pay clearly the electricity charge, make the custom power arrearage of many power supply enterprises or infrastructure management company more and more, even must not cut off the power supply and supervise electricity payment without large tracts of land, directly influenced people's life and social stability.
Problem for the electric energy meter difficult charge, Chinese patent ZL 01261220.0 " single-phase intelligent card electric energy meter " and Chinese patent ZL 02223241.9 " digital-code type prepayment meter " have proposed both to have solved in advance and have collected charges for electricity, and improve the electric energy meter scheme of privacy degrees again.These two parts of patented technologies all are by the single-chip microcomputer in IC-card or the keyboard user to be purchased electrical information to carry out the intellectuality encryption, the user of input is purchased electrical information carry out intellectuality and understand by being installed on single-chip microcomputer in the electric energy meter again, reach the purpose that the raising user purchases the electrical information safe coefficient with this.Because these two kinds of schemes still exist IC-card or the such data input window open to the user of keyboard, so just increased the degree that prevents extraneous malicious attack, and can not fundamentally avoid outside world, also letter is suffered from back channel and can be allowed the sale of electricity computing machine of checking meter often check checking meter of user and purchase electric data.Therefore, the user purchases the data message that electricity charge and electricity consumption check meter and still has bigger security breaches.
Summary of the invention
Purpose of the present invention; aim to provide and a kind ofly can solve electric energy remote automatic meter reading charging problem; can protect the data information security of purchasing the electricity charge again, make its electric energy counting cost by gas meter of fundamentally avoiding outside world and control and management technology and data security protection method thereof.
Another object of the present invention provides a kind of electric energy counting cost by gas meter and decentralised control management kilowatt meter reading-out system device.
Method proposed by the invention is: on the sale of electricity computing machine of checking meter, set up one check meter, control and toll administration database; In the user transformers low-pressure side meter-copy collector is set; At each custom power line house lead in end, be provided with one and be installed together and contain a carrier module of purchasing electric data storage circuitry with user's electric energy meter.The user purchase electric toll administration and control procedure as follows: a, when the user purchases electricity, the toll administration personnel enter the sales management window of the sale of electricity computing machine of checking meter with password, receipt is also printed in gathering; B, purchase electrical data signal breath and send to the carrier meter reading concentrator by the sale of electricity computing machine of checking meter by up channel, meter-copy collector receives that the user purchases electric data and promptly transmits to user's electric energy meter by power line carrier; After c, user's electric energy meter carrier module are received this information, one-chip computer interpretation immediately in the module, store into and purchase electric data storage circuitry purchasing the form of electric data with regulation, to receive that simultaneously the affirmation information of purchasing electric data passes meter-copy collector back by power line carrier, meter-copy collector is passed the sale of electricity computing machine of checking meter back by up channel again; D, each user's electric energy meter carrier module are gathered the increment information of user power utilization in real time, every increase 1KWh just and purchase electric data relatively and calculate remaining sum, reduce to below the setting value when purchasing electric data remaining sum, carrier module sends sound, light warning and prompting and purchases electric data remaining sum; E, when purchasing electric data remaining sum and reduce to 0, the outage of carrier module operational relay; F, repeat said process when the user hands over money to purchase electricity once more, user's electric energy meter carrier module detects purchased electric data remaining sum greater than 0 o'clock, the operational relay energising.
User's electric energy meter carrier module is received when the user purchases electric data, except carrying out password authentification, parity check sum frame data and checking, also will beam back the sale of electricity computing machine of checking meter to these data and confirm.Because these data are for repeatedly to purchase the summation of electric data, so the storing value of purchasing in the carrier module in the electric data storage circuitry should be consistent with the transmission value of the sale of electricity computing machine of checking meter.After the sale of electricity computing machine of checking meter had sent the electric data of purchasing of user, if can not receive return message, return data of perhaps receiving and transmission value were inconsistent, thought then that this time communication makes mistakes just can retransmit automatically; Still make mistakes if continuous several times is retransmitted, illustrate that communication channel is temporarily obstructed, just can this time transmission value suspense on the hard disk of computing machine, cross one or two hour operator and operate transmission once more, till sending successfully.Usually, under the situation that supply line is communicated with, the carrier communication channel was always purchased the electrical data signal breath to the user and is sent successfully within 24 hours.This has just guaranteed that the user purchases electric data and can not leak and send out or wrong sending out.
Electric energy counting cost by gas meter and decentralised control management kilowatt meter reading-out system device be included in the sale of electricity computing machine of checking meter set up one check meter, control and toll administration database; In the user transformers low-pressure side carrier meter reading concentrator is set; The carrier module that can realize data acquisition, carrier communication and control output is set at each custom power line house lead in end electric energy meter place; User's electric energy meter carrier module contain one by non-volatile RAM (EEPROM, FRAM) device is formed purchases electric data storage circuitry and is installed together with user's electric energy meter; The sale of electricity computing machine of checking meter inserts the up channel that public telephone network is formed by modulator-demodular unit; Meter-copy collector also by the up channel of compositions such as modulator-demodular unit access public telephone network, inserts the down channel that low-voltage supply line is formed by carrier communication module on the one hand on the other hand; The carrier module that is installed together with user's electric energy meter, the coupling capacitance of leading up to inserts the down channel that low-voltage supply line is formed, another road directly links to each other with the pulse output end of user's electric energy meter, be installed on pilot relay on the carrier module and receive break-make control signal from single-chip microcomputer, the power output contact is serially connected with the output terminal of electric energy meter phase line.
Wherein, up channel can be a mobile radio communication also, or the dedicated communications network that utilizes optical fiber, microwave, data radio station, concentric cable, twisted-pair feeder to form.
Method and system device proposed by the invention compared with prior art has the following advantages:
1, have the advantage that prepayment meter is thoroughly stopped subscriber arrearage concurrently, also have carrier system electric energy meter load analysis and Control to the family, running status is the advantage of monitoring in real time.Both the difficulty of checking meter can be solved, this two large problems of difficult charge can be solved again.
2, the user purchases electrical data signal breath by voltage Power Line Carrier Channel transmission totally-enclosed, good confidentiality, has removed the open window of type prepayment meters such as IC-card formula, and protection is purchased electrical data signal and ceased safety, makes it can not be subjected to any malicious attack and changes.
3, the user purchase that electrical data signal breath is kept at user's electric energy meter, meter-copy collector simultaneously and the sale of electricity computing machine of checking meter on, when any one equipment was subjected to damaging in the system, the user purchased electric data and still can recover on 100% ground.User's dispute of having avoided type prepayment meters such as IC-card formula very easily to take place even take place once in a while, also obtains the science evidence obtaining easily.
4, when electricity price and other electricity consumption policies need be adjusted, can be in time carry out corresponding regulation and control according to new electrovalence policy (as time-of-use tariffs, rich withered electricity price) etc. by the main website computing machine of checking meter, fast and reliable can not cause the situation that influences social stability and take place.
5, use known prepayment meters such as IC-card formula, each user actual power consumption in this month can't be known by management of power use department, also just can't adjust of that month electricity charge number from the actual withdrawal of user.If, just may cause the long-term accumulation of huge " line loss " electricity charge because of bigger " line loss " rate takes place in improper electricity consumption (as stealing, electric leakage etc.).Method provided by the present invention be owing to can promptly and accurately make a copy of and calculate of that month " line loss ", can in time find and the massive losses taking measures to avoid to be difficult to remedy takes place.
6, method provided by the present invention has not only solved the deficiency of known technology " power line carrier electrical energy meter " difficult charge aspect, and has stopped that known technology " prepayment meter such as IC-card formula " is vulnerable, the information security leak of " legal stealing ".Can make distribution of electrical power, use, metering and charge all place the bright computer supervision of full impregnated and Guaranteed, make power supply enterprise or infrastructure management company thoroughly remove the heavy burden of the long-term arrearage of user, a large amount of arrearages.For the recovery of electric system huge investment provides effective technical means.And " power line carrier electrical energy meter " of implementation cost of the present invention and known technology, " prepayment meter such as IC-card " are suitable substantially.Performance and function have been turned over and but can have been kept price constant.So ratio of performance to price height, application risk is little, and comprehensive benefit is good.
Method and system provided by the present invention has been saved manpower, financial resources.People each user's in just whole as can be known unit of office or sub-district electricity consumption and electric fees charging index, intercepted electricity filching behavior, the legitimate rights and interests of power supply enterprise have been safeguarded, can the unit of being widely used in, the residential quarter, be a technology of benefiting the nation and the people, have good society and economical synthesis benefit.
Description of drawings
Fig. 1 the invention provides the synoptic diagram of method and the structural principle block diagram of system and device;
Fig. 2 is the structural principle block diagram of the meter-copy collector of Fig. 1;
Fig. 3 is the structural principle block diagram of the carrier module of Fig. 1;
Fig. 4 is the circuit theory diagrams of signal coupling circuit in the carrier module of Fig. 3, signal receiving circuit and signal sending circuit;
Fig. 5 is the circuit theory diagrams of the carrier signal demodulator circuit [15] of Fig. 3;
Fig. 6 is the data storage circuitry of Fig. 3, the pulse input circuit schematic diagram of metering module to microcontroller system of sampling;
Fig. 7 forms the schematic diagram of data storage circuitry for ferroelectric memory;
Fig. 8 is the serial communication interface of Single Chip Microcomputer (SCM) system and the schematic diagram that ferroelectric memory is formed data storage circuitry;
Fig. 9 is the I of microcontroller system
2C bus interface and ferroelectric memory are formed the schematic diagram of data storage circuitry;
Figure 10 is for the alarm condition display circuit and latch the buffer control circuit schematic diagram;
Figure 11 is the carrier signal modulation circuit;
Figure 12 is another embodiment carrier signal modulation-demodulation circuit schematic diagram;
Figure 13 is among the embodiment, carrier signal modulation-demodulation circuit schematic diagram;
Figure 14 is among another embodiment, carrier signal modulation-demodulation circuit schematic diagram.
Embodiment
Embodiment is explained the specific embodiment of the invention below in conjunction with accompanying drawing:
With reference to shown in Figure 1, the kilowatt meter reading-out system device is formed by following principle: a, the sale of electricity computing machine 1 of checking meter set up one check meter, control and toll administration database; B, a carrier meter reading concentrator 3 is set in the user transformers low-pressure side; C, the carrier module 4 that can realize data acquisition, carrier communication and control output is set at each user's electric energy meter; D, user's electric energy meter carrier module contain one by non-volatile RAM (EEPROM, FRAM) device is formed purchases electric data storage circuitry and is installed together with user's electric energy meter; E, the sale of electricity computing machine 1 of checking meter insert public telephone network by modulator-demodular unit, and public telephone network can be a mobile radio communication, or utilize the up channel of the dedicated communications network composition of optical fiber, microwave, data radio station, concentric cable, twisted-pair feeder composition; F, meter-copy collector 3 also insert the up channel 2 that public telephone network is formed by modulator-demodular unit on the one hand, insert the down channel 6 that low-voltage supply line is formed by three carrier communication module 4 on the other hand; The coupling capacitance of leading up to g, user's electric energy meter carrier module inserts the down channel 6 of low-voltage supply line composition, another road directly links to each other with the pulse output end of user's electric energy meter 5, wherein pilot relay receives the break-make control signal from single-chip microcomputer, and the power output contact is serially connected with the output terminal of electric energy meter phase line.
The user purchase electric toll administration and control procedure as follows: a, when the user purchases electricity, the toll administration personnel enter the sales management window of the sale of electricity computing machine 1 of checking meter with password, receipt is also printed in gathering; B, purchase electrical data signal breath and send to carrier meter reading concentrator 3 by the sale of electricity computing machine 1 of checking meter by up channel 2, meter-copy collector 3 receives that the user purchases electric data and promptly transmits to user's electric energy meter 5 by line of electric force 6 carrier waves; After c, user's electric energy meter carrier module 4 are received this information, one-chip computer interpretation immediately in the module, store into and purchase electric data storage circuitry purchasing the form of electric data with regulation, to receive that simultaneously the affirmation information of purchasing electric data passes meter-copy collector back by line of electric force 6 carrier waves, meter-copy collector is passed the sale of electricity computing machine 1 of checking meter back by up channel 2 again; D, each user's electric energy meter carrier module 4 are gathered the increment information of user power utilization in real time, every increase 1KWh just and purchase electric data relatively and calculate remaining sum, reduce to below the setting value when purchasing electric data remaining sum, carrier module sends sound, light warning and prompting and purchases electric data remaining sum; E, when purchasing electric data remaining sum and reduce to 0, the outage of carrier module operational relay; F, repeat said process when the user hands over money to purchase electricity once more, user's electric energy meter carrier module detects purchased electric data remaining sum greater than 0 o'clock, the operational relay energising.
After the sale of electricity computing machine 1 of checking meter had sent the electric data of purchasing of user, if can not receive return message, return data of perhaps receiving and transmission value were inconsistent, thought then that this time communication makes mistakes just can retransmit automatically; Still make mistakes if continuous several times is retransmitted, illustrate that communication channel is temporarily obstructed, just can this time transmission value suspense on the hard disk of computing machine, cross one or two hour operator and operate transmission once more, till sending successfully.
Fig. 2 represents the theory of constitution block diagram of the carrier meter reading concentrator 3 in the one embodiment of the invention.Wherein power module 7 provides required power supply for concentrator, information such as telephone wire 12 transmits the meter reading data storehouse is come in the sale of electricity computing machine 1 of checking meter setting, check meter order and user purchase electric data enter modulator-demodular unit 8, modulator-demodular unit 8 transfers to arithmetic control circuit 9 to the information after the demodulation by the RS-232C interface, and meter reading data that 9 of arithmetic control circuits send the meter reading data storehouse or from carrier communication module 11 and user purchase electric data and pass on into data storage circuitry 10.(even the generation outage waits other situation, this database can obliterated data information yet for EEPROM, FRAM) device composition by non-volatile RAM for data storage circuitry 10.Three carrier communication module 11 are connected on A, B, the C three-phase power line by capacitive coupling, on the one hand send check meter control command and user and purchase electric data to user's electric energy meter carrier module 4, meter reading data, the user who accepts to transmit on user's electric energy meter carrier module 4 on the other hand purchases electric data validation information, transfers to arithmetic control circuit 9 again.Arithmetic control circuit 9 is just purchased electric data to the meter reading data in the data storage circuitry 10 or user and is delivered to modulator-demodular unit 8 by the RS-232C interface after control command is checked meter in reception.Modulator-demodular unit 8 is checking meter of having modulated or purchase up channel 12 that electric data form by telephone wire and transfer to the sale of electricity computing machine 1 of checking meter and receive.Wherein, arithmetic control circuit 9 is that core devices is formed by one-chip computer, and above-mentioned data operation is handled and communication control program is solidificated in the program storage of single-chip microcomputer.Three carrier communication module 11 also are to be core devices with the one-chip computer, form jointly with custom-designed carrier communication special IC or modulation integrated circuit.Modulator-demodular unit 8 can be finished product MODEM repacking, also can be made of the MODEM chip that specialized designs is made.
Fig. 3 represents the theory of constitution block diagram of user's electric energy meter carrier module 4 in the one embodiment of the invention.Wherein L, N are the phase line and the zero line of line of electric force, 13 is the carrier signal coupled circuit, 14 is the carrier signal receiving circuit, and 15 is the carrier signal demodulator circuit, and 16 is microcontroller system, 17 is the electric energy meter pulse input circuit, 18 are operation alarm condition display circuit, and 19 for latching buffer control circuit, and 20 is data storage circuitry, 21 is the carrier signal modulation circuit, and 22 is the carrier signal transtation mission circuit.
Carrier signal on line of electric force L, the N is via coupled circuit [13] entering signal receiving circuit 14.14 pairs of signals of signal receiving circuit carry out entering carrier signal demodulator circuit 15 after the pre-service.The digital signal that is demodulated by carrier signal demodulator circuit 15 is sent into microcontroller system 16 and is discerned calculation process.If identify is that the electrical data signal of purchasing that main website sends here ceases, and just is stored in data storage circuitry 20, simultaneously confirming that return data letter trouble is sent to carrier signal modulation circuit 21.Carrier signal modulation circuit 21 is delivered to carrier signal transtation mission circuit 22 after modulating according to spread spectrum or FSK principle, and delivers on line of electric force L, the N through carrier signal coupled circuit 13; If identifying is the order of checking meter that concentrator is sent, just the user who deposits in the data storage circuitry 20 is purchased electric data or meter reading data packing in real time, send on line of electric force L, the N according to above-mentioned path and step equally; If identifying is the break-make control command that concentrator is transmitted, then move pilot relay KJ by latching buffer control circuit [19] output corresponding operating.Real time measure pulse MC by electric energy meter 5 enters microcontroller system 16 by electric energy meter pulse input circuit 17 and counts and computing, and operation result is stored in data storage circuitry 20.During the every increase of operation result 1Kwh, microcontroller system 16 is just purchased electric data with the user in voltameter numerical value and the data storage circuitry 20 and is compared, calculate the user and purchase electric data remaining sum, purchasing electric data remaining sum as the user equals zero, just to latching buffer control circuit 19 output power off command, simultaneously to operation alarm condition display circuit 18 output off-position shows signal; Purchase electric data remaining sum less than setting value (as 10Kwh) and greater than 0 as the user, just to operation alarm condition display circuit 18 output sound and light alarm signals; As purchase electric data remaining sum more than or equal to setting value (as 10Kwh), then continue to keep former running status constant.Intelligent treatment programs such as above-mentioned communication s operation control all are solidificated in the program storage in the microcontroller system 16.Microcontroller system 16 also can be made up of digital signal processor DSP.Data storage circuitry 20 can be made up of EEPROM, also can be made up of ferroelectric memory FRAM.
Fig. 4 represents in the one embodiment of the invention, the circuit theory diagrams of signal coupling circuit 13, signal receiving circuit 14 and signal sending circuit 22 in user's electric energy meter carrier module 4.Carrier signal by line of electric force L, N input enters impedance transformer T and D1 by coupling capacitance C1, is coupled to IN by resistance R 1, capacitor C 3 and C2, inductance L 1, diode D2, D3 then.The output signal that enters by OUT, through triode Q1, Q2, Q3, Q4 and capacitor C 5, C6, resistance R 2, R3 are after the power amplifier that diode D4, D5, D6, D7 form amplifies, be coupled to impedance transformer T by inductance L 2, capacitor C 4, be coupled to line of electric force L, N output by capacitor C 1 again.
Fig. 5 represents in the one embodiment of the invention, the circuit theory diagrams of FSK carrier signal demodulator circuit 15.Signal by signal receiving circuit 14 enters by IN, through U1 (MC3361), capacitor C 11, C12, C13, C14, C15, C16, C17, C18, resistance R 9, R10 and CR1, CR2, BF1 and U2 (LM258), capacitor C 7, C8, C9, C10 import microcontroller system 16 by IN1, P1.x behind mixing, the demodulation of frequency discriminator such as resistance R 4, R5, R6, R7, R8, R11.
Fig. 6 represents in the one embodiment of the invention that data storage circuitry [20] and sampling metering module 17 are to the pulse input circuit schematic diagram of microcontroller system 16.Microcontroller system 16 can be a MCS-51 series, also can be PIC series or other any a one-chip computer and crystal X1, capacitor C 19, C20 composition.Sampling metering module 17 is made up of photoelectrical coupler U3, resistance R 12 to the pulse input circuit of microcontroller system 16, and metrical pulse is imported by CF0, CF1.Data storage circuitry 20 is made up of U4 (X25045), resistance R 13.
Fig. 7 represents in the another embodiment of the present invention, is made of the schematic diagram of data storage circuitry 20 ferroelectric memory U5 (FM25040) and resistance R 14.
Fig. 8 represents among another embodiment of the present invention, uses serial communication interface RXD, the TXD of Single Chip Microcomputer (SCM) system, the schematic diagram of the data storage circuitry of forming with ferroelectric memory U6 (FM25040) 20.
Fig. 9 represents among another embodiment of the present invention, uses the I of microcontroller system
2The C bus interface, the schematic diagram of the data storage circuitry of forming with ferroelectric memory U7 (FM24C04) and resistance R 15, R16 20.
Figure 10 represents in the one embodiment of the invention, operation alarm condition display circuit 18 and the circuit theory diagrams that latch buffer control circuit 19.By the control signal of P3.x output, through U5 (BH3024) and resistance R 20, R21, R22 decoding, latch and drive relay K J action.Resistance R 17, R18, R19 and light emitting diode D8 have formed a three-state (bright, flicker, dark) display 18.
Figure 11 represents in the one embodiment of the invention, by the schematic diagram of 2 4001, capacitor C 23, C24, C25, C26 and resistance R 23, R24, R25, R26 and CR3, CR4 and the 1 4013 FSK carrier signal modulation circuit of forming 21.Modulation signal is exported by OUT after triode Q5, resistance R 27 and capacitor C 27 are amplified.
Figure 12 represents in the another embodiment of the present invention, the schematic diagram of carrier signal demodulator circuit 15, carrier signal modulation circuit 21.Signal coupling circuit 1 is by the carrier signal of IN input, through U1 (MC3361), resistance R 28, R32 and capacitor C 29, C31 and BF1 mixing after capacitor C 28 is coupled to triode Q6, resistance R 29, R30, R31 high frequency amplifies, be coupled into special-purpose spread spectrum communication integrated circuit U12 (PL2000A) demodulation through capacitor C 30 again, the digital signal that demodulates is sent into one-chip computer MCU and is discerned calculation process.The user that one-chip computer MCU need send purchases electric data or real-time meter reading data outputs to special-purpose spread spectrum communication integrated circuit U12 modulation equally, delivers to signalk coupling loop joint 1 through OUT.Capacitor C 32, X3, C33, C34, resistance R 34, R35, R36, R33, capacitor C 35, C36, C37, C38, C39, C40, crystal X4 are the peripheral circuit element of U12 among the figure.
Figure 13 represents among another embodiment of the present invention, the schematic diagram of carrier signal demodulator circuit 15, carrier signal modulation circuit 21.Signal coupling circuit 1 is by the carrier signal of IN input, be coupled into special-purpose spread spectrum communication integrated circuit U13 (PL2000B) demodulation by capacitor C 42 after triode Q7, resistance R 37, R38, R39, R40 and capacitor C 41 high frequencies amplify, the digital signal that demodulates is sent into one-chip computer MCU and is discerned calculation process.The user that one-chip computer MCU need send purchases electric data or real-time meter reading data outputs to special-purpose spread spectrum communication integrated circuit U13 modulation equally, delivers to signal coupling circuit 1 through OUT.BF2, resistance R 44, R41, R42, R43, R45 and capacitor C 43, C45, C46, C47 are the peripheral circuit element of U13 among the figure.Crystal X5,44 of capacitor C are the clock circuit peripheral cell of MCU.
Figure 14 represents among another embodiment of the present invention, the schematic diagram of carrier signal demodulator circuit 15, carrier signal modulation circuit 21.Signal coupling circuit 1 is by the carrier signal of IN input, be coupled into special-purpose spread spectrum communication integrated circuit U14 (PL2101) demodulation by capacitor C 49 through triode Q8, R46, R47, R48, R49, capacitor C 48 high frequencies after amplifying, the digital signal that demodulates is sent into one-chip computer MCU and is discerned calculation process.The user that one-chip computer MCU need send purchases electric data or real-time meter reading data outputs to special-purpose spread spectrum communication integrated circuit U14 modulation equally, delivers to signal coupling circuit 1 through OUT.Resistance R 53, R50, R51, R52, R54 and crystal X6 among the figure, capacitor C 50, C51, C52, C58, C59, C60 and BF3 are the peripheral circuit element of U14.The real time clock circuit peripheral cell that crystal X7, capacitor C 56, C57, battery BAT then contain for U14 is convenient to realize multiple rate prepayment meter design.
In sum, selecting a kind of in the special-purpose electric energy meter chips such as AD7755, BL0932, BL0955 or CS5460 for use, is that core devices is formed user's electric energy meter 5 with it.
Select a kind of in digital signal processor DSP or any a one-chip computers such as MCS-51 series, PIC series for use, form Single Chip Microcomputer (SCM) system 16 according to Fig. 6, and the Intelligent treatment programs such as computing and control of will communicating by letter are solidificated in all in the program storage of MCU; Select for use a kind of scheme among Fig. 6, Fig. 7, Fig. 8 or Fig. 9 to form data storage circuitry 20; Select for use Figure 12, Figure 13, Figure 14 or Fig. 5 to add a kind of scheme among Figure 11, form carrier signal demodulator circuit 15, carrier signal modulation circuit 21 in the carrier module 4; Form signal coupling circuit 13, signal receiving circuit 14 and signal sending circuit 22 according to Fig. 4 circuit; Form operation alarm condition display circuit 18 and latch buffer control circuit 19 according to Figure 10 circuit.Above-mentioned each circuit is formed carrier module 4 according to Fig. 3 theory diagram, and can be assembled in the watchcase with 5 integration of user's electric energy meter.Form meter-copy collector according to Fig. 2 theory diagram, and carrier communication, operation processing program are solidificated in the program storage of MCU wherein.
By shown in Figure 1, after integrating, user's electric energy meter 5 and carrier module 4 be installed in each power consumer place; Concentrator 3 is installed in the low pressure end or the power load central power porch of supply transformer, and connects a telephone set arrival line for it.After master station computer is installed the sale of electricity software of checking meter, each user's electric energy meter information input is checked meter in the sale of electricity database, and get final product work for it connects a telephone set arrival line by a Modem.
Claims (21)
1. in prepayment electric energy meter system, purchase electric method safely for one kind, described prepayment electric energy meter system comprises: the sale of electricity computing machine of checking meter, the meter-copy collector that is arranged on the user transformers low-pressure side and at least one user's electric energy meter, described user's electric energy meter comprises user's electric energy meter carrier module, described electric energy meter carrier module comprises purchases electric data storage circuitry, and described method comprises:
The sale of electricity computing machine of checking meter sends to meter-copy collector with the electric data of purchasing of user by up channel;
Meter-copy collector is purchased electric data with the user who receives and is utilized power line carrier to be forwarded to user's electric energy meter carrier module in user's electric energy meter by down channel;
After user's electric energy meter carrier module receives that the user purchases electric data, the user is purchased electric data stores into and purchase electric data storage circuitry with the form of regulation,
User's electric energy meter carrier module the user is purchased electric data with the regulation form store into purchase electric data storage circuitry after, the user who receives is purchased electric data passes described meter-copy collector back by power line carrier as confirmation; And
Described meter-copy collector is after receiving that the described user who passes back purchases electric data, and the described user that will pass back by up channel purchases the electric data back sale of electricity computing machine of checking meter again, to carry out the affirmation that data transmit correctness.
2. the method for in prepayment electric energy meter system, purchasing electricity safely according to claim 1, wherein:
The sale of electricity computing machine of checking meter is the total amount that the user repeatedly purchases electric data to the electric data of purchasing that user's electric energy meter carrier module sends.
3. the method for in prepayment electric energy meter system, purchasing electricity safely according to claim 1, wherein will check meter user that the sale of electricity computing machine transmits of meter-copy collector purchases electric data and stores, and the transmission data of storing in the storage data of purchasing electric data storage circuitry in meter-copy collector and the user's electric energy meter carrier module and the sale of electricity computing machine of checking meter are identical, can can't harm when damage takes place with convenient user's electric energy meter, check meter sale of electricity computing machine and any parts of meter-copy collector and recover all and purchase electric data.
4. the method for in prepayment electric energy meter system, purchasing electricity safely according to claim 1, wherein up channel utilizes public telephone network, mobile radio communication to constitute, or the dedicated communications network that utilizes optical fiber, microwave, data radio station, concentric cable, twisted-pair feeder to form constitutes.
5. the method for purchasing electricity in prepayment electric energy meter system safely according to claim 1, wherein down channel is made of low-voltage supply line.
6, a kind of prepayment electric energy meter system, this system comprises:
The sale of electricity computing machine (1) of checking meter is used for by the data base administration window on it to user's sale of electricity, and the user is purchased electric data is sent to meter-copy collector by up channel; With
Meter-copy collector (3) is arranged on the user transformers low-pressure side, and the user who is used to receive from the sale of electricity computing machine of checking meter purchases electric data, and described user is purchased electric data utilize power line carrier to be forwarded to user's electric energy meter by down channel; With
At least one user's electric energy meter, comprise: user's electric energy meter carrier module (4) and purchase electric data storage circuitry, the user that described user's electric energy meter carrier module is used to receive from meter-copy collector purchases electric data, and described user is purchased electric data store into and purchase electric data storage circuitry with the form of regulation
Wherein user's electric energy meter carrier module also is configured to: the user is purchased electric data with the regulation form store into purchase electric data storage circuitry after, the user who receives is purchased electric data passes described meter-copy collector back by power line carrier as confirmation; And
Described meter-copy collector also is configured to: after receiving that the described user who passes back from described user's electric energy meter carrier module purchases electric data, the described user that will pass back by up channel purchases the electric data back sale of electricity computing machine of checking meter again, to carry out the affirmation that data transmit correctness.
7. prepayment electric energy meter system according to claim 6, wherein:
The sale of electricity computing machine of checking meter is the total amount that the user repeatedly purchases electric data to the electric data of purchasing that user's electric energy meter carrier module sends.
8. prepayment electric energy meter system according to claim 6, wherein:
Meter-copy collector is configured to that also the user that the sale of electricity computing machine of checking meter transmits is purchased electric data and stores, and the transmission data of storing in the storage data of wherein purchasing electric data storage circuitry in meter-copy collector and the user's electric energy meter carrier module and the sale of electricity computing machine of checking meter are identical, can can't harm when damage takes place with convenient user's electric energy meter, check meter sale of electricity computing machine and any parts of meter-copy collector and recover all and purchase electric data.
9. prepayment electric energy meter system according to claim 6, wherein said user's electric energy meter carrier module also is configured to: the increment information of gathering user power utilization in real time, every increase 1KWh just and purchase electric data relatively and calculate remaining sum, reduce to below the setting value when purchasing electric data remaining sum, user's electric energy meter carrier module sends sound, light warning and prompting and purchases electric data remaining sum; When purchasing electric data remaining sum and reduce to 0, the outage of user's electric energy meter carrier module operational relay; And after the user purchased electricity once more, user's electric energy meter carrier module detects purchased electric data remaining sum greater than 0 o'clock, the operational relay energising.
10. prepayment electric energy meter system according to claim 6, wherein up channel utilizes public telephone network, mobile radio communication to constitute, or the dedicated communications network that utilizes optical fiber, microwave, data radio station, concentric cable, twisted-pair feeder to form constitutes.
11. prepayment electric energy meter system according to claim 6, wherein down channel is made of low-voltage supply line.
12. prepayment electric energy meter system according to claim 6 is wherein saidly purchased electric data storage circuitry and is made up of the non-volatile data memory circuit.
13, prepayment electric energy meter system according to claim 6, wherein said meter-copy collector (3) comprising: modulator-demodular unit (8), arithmetic control circuit (9) and three carrier communication module (11), and wherein:
Modulator-demodular unit (8) is connected with arithmetic control circuit, is used for demodulation and purchases electric data from the user of the sale of electricity computing machine of checking meter, and the user after the demodulation is purchased electric data be sent to arithmetic control circuit; And the user as confirmation who is used to modulate from arithmetic control circuit purchases electric data and sends it to the sale of electricity computing machine of checking meter;
Arithmetic control circuit (9) is connected with modulator-demodular unit, and be of coupled connections with three carrier communication module respectively, the user who is used for after the receiving modem demodulation purchases electric data, and described user is purchased electric data is sent to user's electric energy meter carrier module by carrier communication module; And the user as confirmation who is used to receive from three carrier communication module purchases electric data, and described user is purchased electric data is sent to the sale of electricity computing machine of checking meter by after the modulator-demodular unit modulation;
Three carrier communication module (11) are connected respectively on A, B, the C three-phase power line by coupling capacitance, and be of coupled connections with arithmetic control circuit, be used for sending the user and purchase electric data to user's electric energy meter carrier module, and be used to receive the user that user's electric energy meter carrier module transmits and purchase electric data as confirmation, transfer to arithmetic control circuit again, so that transfer to the sale of electricity computing machine of checking meter by modulator-demodular unit.
14. prepayment electric energy meter system according to claim 6, wherein said user's electric energy meter carrier module (4) comprises:
Carrier signal coupled circuit (13), carrier signal receiving circuit (14), carrier signal demodulator circuit (15), microcontroller system (16), data storage circuitry (20), carrier signal modulation circuit (21), carrier signal transtation mission circuit (22),
Wherein an end of carrier signal coupled circuit (13) is connected with carrier signal receiving circuit (14), carrier signal receiving circuit (14) is connected with carrier signal demodulator circuit (15), carrier signal demodulator circuit (15) is connected with microcontroller system (16), microcontroller system (16) is connected with data storage circuitry (20), carrier signal modulation circuit (21) again, carrier signal modulation circuit (21) is connected with carrier signal transtation mission circuit (22), and carrier signal transtation mission circuit (22) is connected with an end of carrier signal coupled circuit (13).
15. prepayment electric energy meter system according to claim 14, wherein said data storage circuitry (20) is made up of the ferroelectric memory device.
16. prepayment electric energy meter system according to claim 14, wherein said prepayment electric energy meter system also comprises pilot relay (KJ) and the coupled buffer control circuit (19) that latchs, when microcontroller system identify be meter-copy collector transmit the break-make control command time, then move pilot relay by latching buffer control circuit output corresponding operating.
17. prepayment electric energy meter system according to claim 14, wherein said prepayment electric energy meter system also comprises the electric energy meter pulse input circuit (17) that is connected with microcontroller system (16), with the real time measure pulse (MC) that is connected with electric energy meter pulse input circuit (17), and wherein from the real time measure pulse MC of electric energy meter, enter by the electric energy meter pulse input circuit that microcontroller system is counted and computing, operation result is stored in data storage circuitry, during the every increase of operation result 1KWh, microcontroller system is just purchased electric data with the user in voltameter numerical value and the data storage circuitry and is compared, and calculates the user and purchases electric data remaining sum.
18. prepayment electric energy meter system according to claim 14, wherein said prepayment electric energy meter system also comprises the operation alarm condition display circuit (18) that is connected with microcontroller system (16), if wherein the user purchases electric data remaining sum less than setting value and greater than 0, operation alarm condition display circuit just sends sound, light warning.
19. prepayment electric energy meter system according to claim 14, wherein said operation alarm condition display circuit (18), form a ternary display by a LED light and three resistance, the anode of LED light connects respectively+5V and two resistance, the other end of two resistance connects two control output ends of single-chip microcomputer respectively, the negative electrode of LED light connects an end of another resistance, and the other end of described another resistance is connected to one of two control output ends of single-chip microcomputer.
20. prepayment electric energy meter system according to claim 14, wherein said microcontroller system (16) is made of DSP.
21. prepayment electric energy meter system according to claim 13, wherein said meter-copy collector (3) also comprises:
Data storage circuitry (10) is of coupled connections with arithmetic control circuit, and the user who is used to store from the sale of electricity computing machine of checking meter purchases electric data; With
Power circuit (7) is used to supply with the required power supply of each parts.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100258950A CN100501414C (en) | 2004-03-01 | 2004-03-01 | Carrier data safety protection method and recording system device of pre-payment meter |
| PCT/CN2005/000252 WO2005085878A1 (en) | 2004-03-01 | 2005-03-01 | Method for protecting the data of a pre-payment electric energy meter and device of recording meter system |
| EA200601604A EA009690B1 (en) | 2004-03-01 | 2005-03-01 | Carrier data safety protection method and recording system device of pre-payment electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100258950A CN100501414C (en) | 2004-03-01 | 2004-03-01 | Carrier data safety protection method and recording system device of pre-payment meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560638A CN1560638A (en) | 2005-01-05 |
| CN100501414C true CN100501414C (en) | 2009-06-17 |
Family
ID=34441168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100258950A Expired - Fee Related CN100501414C (en) | 2004-03-01 | 2004-03-01 | Carrier data safety protection method and recording system device of pre-payment meter |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100501414C (en) |
| EA (1) | EA009690B1 (en) |
| WO (1) | WO2005085878A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055619B (en) * | 2007-05-11 | 2010-12-08 | 刘军海 | Image identification method and device for mechanical instrument window display figure |
| CN100514359C (en) * | 2007-06-29 | 2009-07-15 | 浙江工业大学 | DSP based multiple channel mechanical digital display digital gas meter automatic detection device |
| CN101916472B (en) * | 2010-07-30 | 2012-05-30 | 河南省电力公司洛阳供电公司 | Balance reminding device |
| CN102176700B (en) * | 2011-01-30 | 2013-03-13 | 重庆市电力公司电力科学研究院 | Concentrator detecting device |
| CN106530672A (en) * | 2016-12-29 | 2017-03-22 | 四川创能海博科技有限公司 | Electricity consumption information acquisition query system, acquisition method and query method |
| CN107966631B (en) * | 2017-12-07 | 2024-02-09 | 国家电网公司 | Anti-cross-family investigation system |
| CN107957531A (en) * | 2017-12-22 | 2018-04-24 | 杭州华春科技有限公司 | The device and method of family table relation can be tested by not registering one's residence |
| CN110007138B (en) * | 2018-06-10 | 2021-10-01 | 福州准点信息科技有限公司 | Electric energy metering system of residential quarter |
| CN109254186A (en) * | 2018-11-11 | 2019-01-22 | 深圳市江机实业有限公司 | A kind of device that can indoors indicate current step price in real time |
| CN109360404B (en) * | 2018-12-13 | 2023-08-15 | 湖南常德牌水表制造有限公司 | Multichannel intelligent meter reading remote transmission device and method for M-Bus master station |
| CN110068790A (en) * | 2019-05-31 | 2019-07-30 | 山东德源电力科技股份有限公司 | It is a kind of to identify and be classified the electric energy meter misalignment detection device calculated based on family table |
| CN112305287A (en) * | 2020-11-10 | 2021-02-02 | 许继集团有限公司 | Anti-electricity-stealing management system and anti-electricity-stealing management method arranged at end tail of concentrator |
| CN115856423B (en) * | 2023-03-01 | 2023-07-07 | 青岛高科通信股份有限公司 | Electronic electric energy meter transformation device and meter reading system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388603Y (en) * | 1999-09-02 | 2000-07-19 | 陈昌金 | Electricity precharging device for power-line carrier |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118041C (en) * | 1996-04-12 | 2003-08-13 | 河南省科学院应用物理研究所 | Automatic system for reading and recording electric power meter |
| FR2766274B1 (en) * | 1997-07-11 | 1999-09-10 | Applications Techniques Etudes Realisations Mec Electroniques Systemes Atermes | METHOD FOR LOCATING DEFECTS ON A METAL CABLE AND DEVICE FOR CARRYING OUT SAID METHOD |
| CN2429836Y (en) * | 2000-07-04 | 2001-05-09 | 山东松立仪表有限责任公司 | Prepaid kilowatt meter for multiple users |
| CN2539186Y (en) * | 2001-05-29 | 2003-03-05 | 秦皇岛开发区海湾电力仪表有限公司 | Bus type modularied electric energy meter |
| US6608489B2 (en) * | 2001-12-17 | 2003-08-19 | The United States Of America As Represented By The Secretary Of The Army | Device, and method of its use, for concurrent real time alerting to accumulation of material upon multiple areas of a surface |
-
2004
- 2004-03-01 CN CNB2004100258950A patent/CN100501414C/en not_active Expired - Fee Related
-
2005
- 2005-03-01 WO PCT/CN2005/000252 patent/WO2005085878A1/en active Application Filing
- 2005-03-01 EA EA200601604A patent/EA009690B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388603Y (en) * | 1999-09-02 | 2000-07-19 | 陈昌金 | Electricity precharging device for power-line carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1560638A (en) | 2005-01-05 |
| WO2005085878A1 (en) | 2005-09-15 |
| EA009690B1 (en) | 2008-02-28 |
| EA200601604A1 (en) | 2007-02-27 |
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